Nanocrystalline Fe - 1 wt. %C compacts obtained by high pressure torsion of mechanically alloyed powder |
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| Institution: | 1. Department of Process Equipment and Control Engineering, School of Chemical Engineering, Northwest University, Xi''an 710069, China;2. School of Information Science and Technology, Northwest University, Xi''an 710127, China;1. School of Materials Science and Engineering, National Key Laboratory of Materials Behavior & Evaluation Technology in Space Environment, Harbin Institute of Technology, Harbin 150001, People''s Republic of China;2. State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People''s Republic of China;3. College of Nuclear Equipment and Nuclear Engineering, YanTai University, YanTai 264000, People''s Republic of China |
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| Abstract: | Powders of a nanocrystalline Fe - 1 wt.% C alloy produced by mechanical alloying were consolidated to form a bulk nanocrystalline sample by means of high pressure torsion at 540°C. The density of the compacts reached 96 % of the theoretical density. The fracture stress of the material was 1 GPa and the microhardness 7.5 GPa, respectively. The grain size was approximately 70 nm and remained stable up to 700°C. The material contained fine particles of oxides and carbides. |
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